A load is a load no matter where you find it as long as it's paying you what you want.
With that said, uship sucks for back hauls. You have NO way to contact the shipper until the shipper gets around to accepting your bid or posts a reply to your question.
When I use to try to use it for back hauls I found it a waste of time. I'd DH out days after asking questions and finely get a reply.
Uship does not work like other load boards. They prevent contact between shipper and buyer because they charge their fee through their system.